PIONEER S-HF31-LR/XTW/UC
Service Manual

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PARTS LIST
NOTES:
A

Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List. The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.

For Packing
Mark No.
1
B 1 2 3 4

Description
Protector Packing Case Polyethylene Bag Operating Instructions (English, French)

Part No.
SHA2530 SHG2693 SHL1448 SRD1305

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Speaker System
Mark No. Description
Network Assy Grille Gasket Input Terminal

Part No.
SWN1766 SMG1859 SEC2056 SKX1100 SWD9006 SWA9007 BYC30P180FZB BYC40P200FZB

Speaker System 3 Speaker System
C

Speaker (Tweeter) Speaker (Woofer) Screw (for Tweeter) Screw (for Woofer)

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SCHEMATIC DIAGRAM
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Network Assy (SWN1766)
P.SW Red IN T135 / 60 Black

D

Woofer

C 1.8 µF/50V
2
E

Blue

Tweeter
Black

P.SW P.SW has extreme positive resistance-temperature characteristics. (Less than 0.3W at the normal temperature). If an abnormal current flows to P.SW due to an excessive input or unusual signal, P.SW heats up and the resistance rapidly increases. With this function, the speakers are protected from excessive input or unusual signal. The resistance value increases even when using a soldering iron for repairing, so allow it to cool before using.

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S-HF31-LR
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